Superheater



Feb. 7, 1933.

A. DROTH ET AL 1,896,294

SUPERHEATER I Filed May 13, 19:0 2 Sheets-Sheet 1 A-TTORNEY.

INVENTORA? Patented Feb. 7, 1933 ALFRED nao'rir, orKASSEL-WILHEIIJMSHOHE, AND CARI. VOLLAND, or

GERMANY, ASSIGNOR-S TO THE s'orEannArnacoMrAnr, or new YORK, N. Y.

SUPERHEATER Application filed May 13, 1930, Serial No. 451,962, and inGermany May 28, 1929.

This invention has for its purpose the provision of another form ofatwo-part superheater header of the type shown in German application#536,887. In the header according to said application the superheaterelements are secured to the header in such a way that two similar endsare secured to the mid dle chamber of the header, these two endsbelonging to two superheater elements or 1 groups arranged one in frontof the other. By the term similar ends are meant ends both receivingsaturated steam or both delivering superheated steam. In the form shownin said application it is impossible to connect the ends of the elementsto the header in the proper sequence where these ends are arranged insuch order that the saturated and superheated ends alternate since theheader has only three chambers. The present invention makes suchconnection possible, however, while retaining the advantages of thesuperheater header made in two parts in accordance with said formerapplication. In accordance with the present invention the headercontains four for example be of prismatic form, of which two areconnected with each other and contain saturated steam, the other twobeing likewise connected to each other and contain- 0 ing superheatedsteam. The four chambers may be arranged one in front of another, or oneabove another, the saturated and superheated chambers alternating.

One pair of said chambers may have its ing pieces so as to form aframe-shaped structure while the other pair may have its long sidesconnected by means of bridging pieces. In this manner the two parts ofthe header can readily be assembled.

The several chambers may be arranged be side one another in such a waythat their lower sides, that is those sides which are to serve for theconnection of the superheater elements, may lie generally horizontal, orin case the chambers are arranged one above another, these surfaces maylie substantially vertical. The four surfaces may lie in the same plane,or in different planes, in the latter case presenting a steppedarrangement.

chambers which may narrow sides connected by means of connectsides into.a'frame by the connecting pieces The' drawings show in Figs. 1 to 10some illustrative forms. of the invention. Fig. 1 shows a steam headerin vertical section;

Fig. 2 shows at the righta front half-view,

and at the left a half-section on line 22 of Fig. 3 of the form of Fig.1;-Fig. 3 shows a top plan view of the same form; Fig. 4 shows a sectionsimilarto .Fig. 1 of a variation; Fi s. 5 to, lOshow in verticalsection, side and top views two further variations.

7 In all forms the steam header consists of two separate parts, and eachpart contains two saturated steam chambers 1 and two superheated steam.chambers 2 which are ar rangedside by side or one above the other insuch a manner that saturated and superheated .headers alternate.- Thesaturated steam chambers lin the form according to Figs. 1 to 3 have twoof their long sides connected to each other by means of the bridge 70piece. 3, while the superheated steam chambers 2 are connected toeachother at their shortest sides or ends into a rectangular frame. Steam isconveyed to the header from the boiler through connection 5. which isiacontinuation of the bridge piece3. The superheated .steam is carriedfrom the superheated chambers 2 and 4 through the connections 6-6. Thesteam chambers in this form of the arrangement are 'so arranged side byside that their undersides, that is to'say-the surfaces to which theends of the superheater elements are attached, lie in a horizontalplane. In this header the last chamber at the right is a superheatedchamber, whereas in the form according to Fig. 4, the last chamber atthe'right is a saturated chamber. 1 Except for this difierence the formof the header according to Fig. 4 is similar" to that shown in Figs. 1to .3, the saturated chambers 1 being in each case connected at theirlong sides :by means of the bridge piece 3, while the superheatedchambers-2 are connected at their shortest 4. Instead of having a singleconnecting bridge 3 between two similar. chambers there might evidentlybe two or more, or the chambers might be. connected along their entirelength by means of. a bridgepiece. As is evident from Figs. 1 to 3, thetwo parts of the header consistingv respectively of the two chambers 1and the bridging piece 3 and of the two chambers 2 and the connectingpieces 4 can easily be assembled into the complete helader, one partbeing inserted into, the ot er.

In the variations shown in Figs. 5 to' 10 the pairs of chambers 1 and 2are arranged vertically in alternating relation, the front faces, whichform the surface to which the several chambers are arranged indifferentplanes so that a stepped arrangement of the front surface and lowersides results. The ends of the superheater elements? can be at cachedeither to the front sides or to the lower sides of the several chambers.The two forms according to Figs. 6 and 7, and Sand 9 respectively.differ only in the sequence of the several chambers. In Fig. 6? asuperheated chamber 2 is found at the top, while in Fig. 8 a saturatedchamber 1 is found in this location.

' Fig. 10 shows a further variation in which the front surface of theupper three chambers lie on a common vertical plane, whereas the frontsurface of the lowest chamber lies in a different vertical plane so thatthere is here also a stepped form of header. The lower chamber 2 couldhave the ends of the elements'7 connected either toits front or to itslower side.

We claim: 1. I A steam superheater header comprising in combination two.separate-parts each including parallel chambers, means uniting thechambers of eachpart, the two parts being positioned relatively to eachother so that the chambers of one alternate with thoseof the other andwiththeir front faces disposed in different planes. 7 I j 2. A steamsuperheater header in' aceor-dance with claim lcharacterized in that thefront and lower faces of the parts present a stepped contour.

chamber of one part overhangs another chamber thereof.

5. A steam superheater header comprising in combination two separateparts each including two chambers, one of the parts being substantiallyin the form of a loop into which a chamber of the other part extends,the part of said last mentioned chamber being removably associated withthe chambers ofsaid loop.

6. A steam superheater headercomprising in combination two separateparts each inparts being substantially in the form of a loop, the otherpart having chambered portions straddling a chamber of the loop andremovably associated therewith.

8. A steam superheater header of the type described, comprising incombination two separate parts each including two parallel chambers, thetwo parts being separably associated an-d'so positioned relatively toeach other that the chambers of one alternate with those of the other,the means uniting the two chambers of one part into one piece being a Vconduit bridging over the intervening chamber of the other part, and themeans uniting the two chambers of the second part into one piece beingtwo conduits extending around the ends of the intervening chamber of thefirst part. Y

ALFRED DROTI-I.

CARL VOLLAND.

'3. A steam superheater header according to claim 1 wherein a chamber ofone of the parts extends forward beyond a chamber of the other part.

4. A steam superheater he'ader according to claim 1 furthercharacterizedin that a chamber of one of the parts extends forwardbeyond a chamber of the other part and a I

